Leaked source code of windows server 2003
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/**********************************************************************/
/** Microsoft Passport **/
/** Copyright(c) Microsoft Corporation, 1999 - 2001 **/
/**********************************************************************/
/*
Ticket.cpp
FILE HISTORY:
*/
// Ticket.cpp : Implementation of CTicket
#include "stdafx.h"
#include "Passport.h"
#include "Ticket.h"
#include <time.h>
#include <nsconst.h>
#include "variantutils.h"
#include "helperfuncs.h"
// gmarks
#include "Monitoring.h"
/////////////////////////////////////////////////////////////////////////////
// CTicket
//===========================================================================
//
// InterfaceSupportsErrorInfo
//
STDMETHODIMP CTicket::InterfaceSupportsErrorInfo(REFIID riid)
{
static const IID* arr[] =
{
&IID_IPassportTicket,
&IID_IPassportTicket2
};
for (int i=0;i<sizeof(arr)/sizeof(arr[0]);i++)
{
if (InlineIsEqualGUID(*arr[i],riid))
return S_OK;
}
return S_FALSE;
}
//===========================================================================
//
// SetTertiaryConsent
//
STDMETHODIMP CTicket::SetTertiaryConsent(BSTR bstrConsent)
{
_ASSERT(m_raw);
if(!m_valid ) return S_FALSE;
if(!bstrConsent) return E_INVALIDARG;
HRESULT hr = S_OK;
if(SysStringByteLen(bstrConsent) != sizeof(long) * 4 ||
memcmp(m_raw, bstrConsent, sizeof(long) * 2) != 0 )
hr = E_INVALIDARG;
else
{
try{
m_bstrTertiaryConsent = bstrConsent;
}
catch(...)
{
hr = E_OUTOFMEMORY;
}
}
return hr;
}
//===========================================================================
//
// needConsent -- if consent cookie is needed,
// return the flags related to kids passport
//
HRESULT CTicket::ConsentStatus(
VARIANT_BOOL bRequireConsentCookie,
ULONG* pStatus,
ConsentStatusEnum* pConsentCode)
{
ConsentStatusEnum ret = ConsentStatus_Unknown;
ULONG status = 0;
u_long ulTmp;
if (m_bstrTertiaryConsent &&
SysStringByteLen(m_bstrTertiaryConsent) >= sizeof(long) * 4)
{
ULONG* pData = (ULONG*)(BSTR)m_bstrTertiaryConsent;
memcpy((PBYTE)&ulTmp, (PBYTE)(pData + 3), sizeof(ulTmp));
status = (ntohl(ulTmp) & k_ulFlagsConsentCookieMask);
ret = ConsentStatus_Known;
}
else
{
TicketProperty prop;
// 1.X ticket, with no flags in it
if (S_OK != m_PropBag.GetProperty(ATTR_PASSPORTFLAGS, prop))
{
ret = ConsentStatus_NotDefinedInTicket;
goto Exit;
}
ULONG flags = GetPassportFlags();
if(flags & k_ulFlagsConsentCookieNeeded)
{
if (bRequireConsentCookie)
{
ret = ConsentStatus_Unknown;
flags = flags & k_ulFlagsAccountType;
}
else
{
ret = ConsentStatus_Known;
}
}
else
ret = ConsentStatus_DoNotNeed;
status = (flags & k_ulFlagsConsentCookieMask);
}
Exit:
if(pConsentCode)
*pConsentCode = ret;
if (pStatus)
*pStatus = status;
return S_OK;
}
//===========================================================================
//
// get_unencryptedCookie
//
STDMETHODIMP
CTicket::get_unencryptedCookie(ULONG cookieType, ULONG flags, BSTR *pVal)
{
PassportLog("CTicket::get_unencryptedCookie :\r\n");
if (!m_raw) return S_FALSE;
HRESULT hr = S_OK;
if (!pVal || flags != 0) return E_INVALIDARG;
switch(cookieType)
{
case MSPAuth:
*pVal = SysAllocStringByteLen((LPSTR)m_raw, SysStringByteLen(m_raw));
if (*pVal)
{
// if the secure flags is on, we should turn it off for this cookie always
TicketProperty prop;
if (S_OK == m_PropBag.GetProperty(ATTR_PASSPORTFLAGS, prop))
{
if (prop.value.vt == VT_I4
&& ((prop.value.lVal & k_ulFlagsSecuredTransportedTicket) != 0))
// we need to turn off the bit
{
ULONG l = prop.value.lVal;
l &= (~k_ulFlagsSecuredTransportedTicket); // unset the bit
// put the modified flags into the buffer.
u_long ulTmp;
ulTmp = htonl(l);
memcpy(((PBYTE)(*pVal)) + m_schemaDrivenOffset + prop.offset, (PBYTE)&ulTmp, sizeof(ulTmp));
}
}
}
break;
case MSPSecAuth:
// ticket should be long enough
_ASSERT(SysStringByteLen(m_raw) > sizeof(long) * 3);
// the first 3 long fields of the ticket
// format:
// four bytes network long - low memberId bytes
// four bytes network long - high memberId bytes
// four bytes network long - time of last refresh
//
// generate a shorter version of the cookie for secure signin
*pVal = SysAllocStringByteLen((LPSTR)m_raw, sizeof(long) * 3);
break;
case MSPConsent:
// ticket should be long enough
_ASSERT(SysStringByteLen(m_raw) > sizeof(long) * 3);
// check if there is consent
// if (GetPassportFlags() & k_ulFlagsConsentStatus)
// we always write consent cookie even if there is no consent
if (GetPassportFlags() & k_ulFlagsConsentCookieNeeded)
{
// the first 3 long fields of the ticket
// format:
// four bytes network long - low memberId bytes
// four bytes network long - high memberId bytes
// four bytes network long - time of last refresh
//
// plus the consent flags -- long
//
// generate a shorter version of the cookie for secure signin
*pVal = SysAllocStringByteLen((LPSTR)m_raw, sizeof(long) * 4);
// plus the consent flags -- long
//
if (*pVal)
{
long* pl = (long*)pVal;
// we mask the flags, and put into the cookie
*(pl + 3) = htonl(GetPassportFlags() & k_ulFlagsConsentCookieMask);
}
}
else
{
*pVal = NULL;
hr = S_FALSE;
}
break;
default:
hr = E_INVALIDARG;
break;
}
if (*pVal == 0 && hr == S_OK)
hr = E_OUTOFMEMORY;
return hr;
}
//===========================================================================
//
// get_unencryptedTicket
//
STDMETHODIMP CTicket::get_unencryptedTicket(BSTR *pVal)
{
PassportLog("CTicket::get_unencryptedTicket :\r\n");
*pVal = SysAllocStringByteLen((LPSTR)m_raw, SysStringByteLen(m_raw));
PassportLog(" %ws\r\n", m_raw);
return S_OK;
}
//===========================================================================
//
// put_unencryptedTicket
//
STDMETHODIMP CTicket::put_unencryptedTicket(BSTR newVal)
{
DWORD dw13Xlen = 0;
PassportLog("CTicket::put_unencryptedTicket Enter:\r\n");
if (m_raw)
{
PassportLog(" T = %ws\r\n", m_raw);
SysFreeString(m_raw);
m_raw = NULL;
}
if (!newVal)
{
m_valid = FALSE;
return S_OK;
}
m_bSecureCheckSucceeded = FALSE;
// BOY do you have to be careful here. If you don't
// call BYTE version, it truncates at first pair of NULLs
// we also need to go past the key version byte
DWORD dwByteLen = SysStringByteLen(newVal);
{
m_raw = SysAllocStringByteLen((LPSTR)newVal,
dwByteLen);
if (NULL == m_raw)
{
m_valid = FALSE;
return E_OUTOFMEMORY;
}
}
PPTracePrintBlob(PPTRACE_RAW, "Ticket:", (LPBYTE)newVal, dwByteLen, TRUE);
// parse the 1.3X ticket data
parse(m_raw, dwByteLen, &dw13Xlen);
PPTracePrint(PPTRACE_RAW, "ticket: len=%d, len1.x=%d, len2=%d", dwByteLen, dw13Xlen, dwByteLen - dw13Xlen);
// parse the schema driven data
if (dwByteLen > dw13Xlen) // more data to parse
{
// the offset related to the raw data
m_schemaDrivenOffset = dw13Xlen;
// parse the schema driven properties
LPCSTR pData = (LPCSTR)(LPWSTR)m_raw;
pData += dw13Xlen;
dwByteLen -= dw13Xlen;
// parse the schema driven fields
CNexusConfig* cnc = g_config->checkoutNexusConfig();
if (NULL == cnc)
{
m_valid = FALSE;
return S_FALSE;
}
CTicketSchema* pSchema = cnc->getTicketSchema(NULL);
if ( pSchema )
{
HRESULT hr = pSchema->parseTicket(pData, dwByteLen, m_PropBag);
// passport flags is useful, should treat it special
TicketProperty prop;
if (S_OK == m_PropBag.GetProperty(ATTR_PASSPORTFLAGS, prop))
{
if (prop.value.vt == VT_I4)
m_passportFlags = prop.value.lVal;
}
/*
if (FAILED(hr) )
event log
*/
}
cnc->Release();
}
PPTracePrint(PPTRACE_RAW, "ticket propertybag: size=%d, flags=%lx", m_PropBag.Size(), m_passportFlags);
PassportLog("CTicket::put_unencryptedTicket Exit:\r\n");
return S_OK;
}
//===========================================================================
//
// get_IsAuthenticated
//
STDMETHODIMP CTicket::get_IsAuthenticated(
ULONG timeWindow,
VARIANT_BOOL forceLogin,
VARIANT SecureLevel,
VARIANT_BOOL* pVal
)
{
int hasSecureLevel = CV_DEFAULT;
PassportLog("CTicket::get_IsAuthenticated Enter:\r\n");
PPTraceFunc<VARIANT_BOOL> func(PPTRACE_FUNC, *pVal,
"get_IsAuthenticated", "<<< %lx, %lx, %1x, %p",
timeWindow, forceLogin, V_I4(&SecureLevel), pVal);
if(!pVal)
return E_INVALIDARG;
*pVal = VARIANT_FALSE;
if ((timeWindow != 0 && timeWindow < PPM_TIMEWINDOW_MIN) || timeWindow > PPM_TIMEWINDOW_MAX)
{
AtlReportError(CLSID_Ticket, (LPCOLESTR) PP_E_INVALID_TIMEWINDOWSTR,
IID_IPassportTicket, PP_E_INVALID_TIMEWINDOW);
return PP_E_INVALID_TIMEWINDOW;
}
if (m_valid == FALSE)
{
*pVal = VARIANT_FALSE;
return S_OK;
}
long lSecureLevel = 0;
time_t now;
long interval = 0;
PassportLog(" TW = %X, LT = %X, TT = %X\r\n", timeWindow, m_lastSignInTime, m_ticketTime);
// time window checking
if (timeWindow != 0) // check time window
{
time(&now);
interval = forceLogin ? now - m_lastSignInTime :
now - m_ticketTime;
if (interval < 0) interval = 0;
PPTracePrint(PPTRACE_RAW, "timwindow:%ld, interval:%ld", timeWindow, interval);
if ((unsigned long)(interval) > timeWindow)
{
// Make sure we're not in standalone mode
CRegistryConfig* crc = g_config->checkoutRegistryConfig();
if ((!crc) || (crc->DisasterModeP() == FALSE))
{
if(forceLogin)
{
if(g_pPerf)
{
g_pPerf->incrementCounter(PM_FORCEDSIGNIN_TOTAL);
g_pPerf->incrementCounter(PM_FORCEDSIGNIN_SEC);
}
else
{
_ASSERT(g_pPerf);
}
}
}
else
*pVal = VARIANT_TRUE; // we're in disaster mode, any cookie is good.
if (crc) crc->Release();
goto Cleanup;
}
}
// check secureLevel stuff
hasSecureLevel = GetIntArg(SecureLevel, (int*)&lSecureLevel);
if(hasSecureLevel == CV_BAD) // try the legacy type VT_BOOL, map VARIANT_TRUE to SecureChannel
{
PPTracePrint(PPTRACE_RAW, "SecureLevel Bad Param");
return E_INVALIDARG;
}
else if (hasSecureLevel == CV_DEFAULT)
{
// Make sure we're not in standalone mode
CRegistryConfig* crc = g_config->checkoutRegistryConfig();
if(crc)
lSecureLevel = crc->getSecureLevel();
}
PPTracePrint(PPTRACE_RAW, "check secureLevel:%ld", lSecureLevel);
if(lSecureLevel != 0)
{
VARIANT_BOOL bCheckSecure = ( SECURELEVEL_USE_HTTPS(lSecureLevel) ?
VARIANT_TRUE : VARIANT_FALSE );
PPTracePrint(PPTRACE_RAW, "secure checked OK?:%ld", m_bSecureCheckSucceeded);
// SSL checking
if(bCheckSecure && !m_bSecureCheckSucceeded)
goto Cleanup;
// securelevel checking
{
TicketProperty prop;
HRESULT hr = m_PropBag.GetProperty(ATTR_SECURELEVEL, prop);
PPTracePrint(PPTRACE_RAW, "secure level in ticket:%ld, %lx", (long) (prop.value), hr);
// secure level is not good enough
if(hr != S_OK || SecureLevelFromSecProp((int) (long) (prop.value)) < lSecureLevel)
goto Cleanup;
// time window checking against pin time -- if Pin signin
if(SecureLevelFromSecProp((int) (long) (prop.value)) == k_iSeclevelStrongCreds)
{
hr = m_PropBag.GetProperty(ATTR_PINTIME, prop);
PPTracePrint(PPTRACE_RAW, "pin time:%ld, %lx", (long) (prop.value), hr);
if (hr != S_OK)
goto Cleanup;
interval = now - (long) (prop.value);
if (interval < 0) interval = 0;
PPTracePrint(PPTRACE_RAW, "timewindow:%ld, pin-interval:%ld", timeWindow, interval);
if ((unsigned long)(interval) > timeWindow)
{
goto Cleanup;
}
}
}
}
// if code can reach here, is authenticated
*pVal = VARIANT_TRUE;
Cleanup:
PassportLog("CTicket::get_IsAuthenticated Exit: %X\r\n", *pVal);
return S_OK;
}
//===========================================================================
//
// get_TicketAge
//
STDMETHODIMP CTicket::get_TicketAge(int *pVal)
{
PassportLog("CTicket::get_TicketAge Enter: %X\r\n", m_ticketTime);
if (m_valid == FALSE)
{
AtlReportError(CLSID_Ticket, (LPCOLESTR) PP_E_INVALID_TICKETSTR,
IID_IPassportTicket, PP_E_INVALID_TICKET);
return PP_E_INVALID_TICKET;
}
time_t now;
time(&now);
*pVal = now - m_ticketTime;
if (*pVal < 0)
*pVal = 0;
PassportLog("CTicket::get_TicketAge Exit: %X\r\n", *pVal);
return S_OK;
}
//===========================================================================
//
// get_TimeSinceSignIn
//
STDMETHODIMP CTicket::get_TimeSinceSignIn(int *pVal)
{
PassportLog("CTicket::get_TimeSinceSignIn Enter: %X\r\n", m_lastSignInTime);
if (m_valid == FALSE)
{
AtlReportError(CLSID_Ticket, (LPCOLESTR) PP_E_INVALID_TICKETSTR,
IID_IPassportTicket, PP_E_INVALID_TICKET);
return PP_E_INVALID_TICKET;
}
time_t now;
time(&now);
*pVal = now - m_lastSignInTime;
if (*pVal < 0)
*pVal = 0;
PassportLog("CTicket::get_TimeSinceSignIn Exit: %X\r\n", *pVal);
return S_OK;
}
//===========================================================================
//
// get_MemberId
//
STDMETHODIMP CTicket::get_MemberId(BSTR *pVal)
{
HRESULT hr = S_OK;
if (m_valid == FALSE)
{
AtlReportError(CLSID_Ticket, (LPCOLESTR) PP_E_INVALID_TICKETSTR,
IID_IPassportTicket, PP_E_INVALID_TICKET);
hr = PP_E_INVALID_TICKET;
goto Cleanup;
}
if(pVal == NULL)
{
hr = E_POINTER;
goto Cleanup;
}
*pVal = SysAllocString(m_memberId);
if(*pVal == NULL)
{
hr = E_OUTOFMEMORY;
goto Cleanup;
}
Cleanup:
return hr;
}
//===========================================================================
//
// get_MemberIdLow
//
STDMETHODIMP CTicket::get_MemberIdLow(int *pVal)
{
if (m_valid == FALSE)
{
AtlReportError(CLSID_Ticket, (LPCOLESTR) PP_E_INVALID_TICKETSTR,
IID_IPassportTicket, PP_E_INVALID_TICKET);
return PP_E_INVALID_TICKET;
}
PassportLog("CTicket::get_MemberIdLow: %X\r\n", m_mIdLow);
*pVal = m_mIdLow;
return S_OK;
}
//===========================================================================
//
// get_MemberIdHigh
//
STDMETHODIMP CTicket::get_MemberIdHigh(int *pVal)
{
if (m_valid == FALSE)
{
AtlReportError(CLSID_Ticket, (LPCOLESTR) PP_E_INVALID_TICKETSTR,
IID_IPassportTicket, PP_E_INVALID_TICKET);
return PP_E_INVALID_TICKET;
}
PassportLog("CTicket::get_MemberIdHigh: %X\r\n", m_mIdHigh);
*pVal = m_mIdHigh;
return S_OK;
}
//===========================================================================
//
// get_HasSavedPassword
//
STDMETHODIMP CTicket::get_HasSavedPassword(VARIANT_BOOL *pVal)
{
if (m_valid == FALSE)
{
AtlReportError(CLSID_Ticket, (LPCOLESTR) PP_E_INVALID_TICKETSTR,
IID_IPassportTicket, PP_E_INVALID_TICKET);
return PP_E_INVALID_TICKET;
}
PassportLog("CTicket::get_HasSavedPassword: %X\r\n", m_savedPwd);
*pVal = m_savedPwd ? VARIANT_TRUE : VARIANT_FALSE;
return S_OK;
}
//===========================================================================
//
// get_SignInServer
//
STDMETHODIMP CTicket::get_SignInServer(BSTR *pVal)
{
if (m_valid == FALSE)
{
AtlReportError(CLSID_Ticket, (LPCOLESTR) PP_E_INVALID_TICKETSTR,
IID_IPassportTicket, PP_E_INVALID_TICKET);
return PP_E_INVALID_TICKET;
}
// BUGBUG
return E_NOTIMPL;
}
//===========================================================================
//
// parse
//
// parse the 1.3X ticket fields
void CTicket::parse(
LPCOLESTR raw,
DWORD dwByteLen,
DWORD* pcParsed
)
{
LPSTR lpBase;
UINT byteLen, spot=0;
long curTime;
time_t curTime_t;
u_long ulTmp;
if (!raw)
{
m_valid = false;
goto Cleanup;
}
// format:
// four bytes network long - low memberId bytes
// four bytes network long - high memberId bytes
// four bytes network long - time of last refresh
// four bytes network long - time of last password entry
// four bytes network long - time of ticket generation
// one byte - is this a saved password (Y/N)
// four bytes network long - flags
lpBase = (LPSTR)(LPWSTR) raw;
byteLen = dwByteLen;
spot=0;
// 1.3x ticket length, excluding HM which is 1 long shorter
DWORD dw13XLen = sizeof(u_long)*6 + sizeof(char);
if (byteLen < dw13XLen && byteLen != dw13XLen - sizeof(u_long))
{
m_valid = FALSE;
goto Cleanup;
}
memcpy((PBYTE)&ulTmp, lpBase, sizeof(ulTmp));
m_mIdLow = ntohl(ulTmp);
spot += sizeof(u_long);
memcpy((PBYTE)&ulTmp, lpBase + spot, sizeof(ulTmp));
m_mIdHigh = ntohl(ulTmp);
spot += sizeof(u_long);
wsprintfW(m_memberId, L"%08X%08X", m_mIdHigh, m_mIdLow);
memcpy((PBYTE)&ulTmp, lpBase + spot, sizeof(ulTmp));
m_ticketTime = ntohl(ulTmp);
spot += sizeof(u_long);
memcpy((PBYTE)&ulTmp, lpBase + spot, sizeof(ulTmp));
m_lastSignInTime = ntohl(ulTmp);
spot += sizeof(u_long);
time(&curTime_t);
curTime = (ULONG) curTime_t;
// If the current time is "too" negative, bail (5 mins)
memcpy((PBYTE)&ulTmp, lpBase + spot, sizeof(ulTmp));
if ((unsigned long)(curTime+300) < ntohl(ulTmp))
{
if (g_pAlert)
{
memcpy((PBYTE)&ulTmp, lpBase + spot, sizeof(ulTmp));
DWORD dwTimes[2] = { curTime, ntohl(ulTmp) };
g_pAlert->report(PassportAlertInterface::ERROR_TYPE, PM_TIMESTAMP_BAD,
0, NULL, sizeof(DWORD) << 1, (LPVOID)dwTimes);
}
m_valid = FALSE;
goto Cleanup;
}
spot += sizeof(u_long);
m_savedPwd = (*(char*)(lpBase+spot)) == 'Y' ? TRUE : FALSE;
spot += sizeof(char);
if (dwByteLen == dw13XLen)
{
memcpy((PBYTE)&ulTmp, lpBase + spot, sizeof(ulTmp));
m_flags = ntohl(ulTmp);
}
else
{
// HM cookie
m_flags = 0;
}
spot += sizeof(u_long);
m_valid = TRUE;
if(pcParsed) *pcParsed = spot;
Cleanup:
if (m_valid == FALSE)
{
if(g_pAlert)
g_pAlert->report(PassportAlertInterface::WARNING_TYPE, PM_INVALID_TICKET);
if(g_pPerf)
{
g_pPerf->incrementCounter(PM_INVALIDREQUESTS_TOTAL);
g_pPerf->incrementCounter(PM_INVALIDREQUESTS_SEC);
}
else
{
_ASSERT(g_pPerf);
}
}
}
//===========================================================================
//
// get_TicketTime
//
STDMETHODIMP CTicket::get_TicketTime(long *pVal)
{
PassportLog("CTicket::get_TicketTime: %X\r\n", m_ticketTime);
*pVal = m_ticketTime;
return S_OK;
}
//===========================================================================
//
// get_SignInTime
//
STDMETHODIMP CTicket::get_SignInTime(long *pVal)
{
PassportLog("CTicket::get_SignInTime: %X\r\n", m_lastSignInTime);
*pVal = m_lastSignInTime;
return S_OK;
}
//===========================================================================
//
// get_Error
//
STDMETHODIMP CTicket::get_Error(long* pVal)
{
PassportLog("CTicket::get_Error: %X\r\n", m_flags);
*pVal = m_flags;
return S_OK;
}
//===========================================================================
//
// GetPassportFlags
//
ULONG CTicket::GetPassportFlags()
{
return m_passportFlags;
}
//===========================================================================
//
// IsSecure
//
BOOL CTicket::IsSecure()
{
return ((m_passportFlags & k_ulFlagsSecuredTransportedTicket) != 0);
}
//===========================================================================
//
// DoSecureCheckInTicket -- use the information in the ticket to determine if secure signin
//
STDMETHODIMP CTicket::DoSecureCheckInTicket(/* [in] */ BOOL fSecureTransported)
{
m_bSecureCheckSucceeded =
(fSecureTransported
&& (m_passportFlags & k_ulFlagsSecuredTransportedTicket) != 0);
return S_OK;
}
//===========================================================================
//
// DoSecureCheck
//
STDMETHODIMP CTicket::DoSecureCheck(BSTR bstrSec)
{
if(bstrSec == NULL)
return E_INVALIDARG;
// make sure that the member id in the ticket
// matches the member id in the secure cookie.
m_bSecureCheckSucceeded = (memcmp(bstrSec, m_raw, sizeof(long) * 3) == 0);
return S_OK;
}
//===========================================================================
//
// GetProperty
//
STDMETHODIMP CTicket::GetProperty(BSTR propName, VARIANT* pVal)
{
HRESULT hr = S_OK;
TicketProperty prop;
if (m_valid == FALSE)
{
AtlReportError(CLSID_Ticket, (LPCOLESTR) PP_E_INVALID_TICKETSTR,
IID_IPassportTicket, PP_E_INVALID_TICKET);
return PP_E_INVALID_TICKET;
}
if (!pVal) return E_POINTER;
VariantInit(pVal);
hr = m_PropBag.GetProperty(propName, prop);
if (FAILED(hr)) goto Cleanup;
if (hr == S_FALSE) // no such property back
{
AtlReportError(CLSID_Ticket, (LPCOLESTR) PP_E_NO_ATTRIBUTESTR,
IID_IPassportTicket, PP_E_NO_ATTRIBUTE);
hr = PP_E_NO_SUCH_ATTRIBUTE;
goto Cleanup;
}
if (hr == S_OK)
{
// if(prop.flags & TPF_NO_RETRIEVE)
*pVal = prop.value; // skin level copy
prop.value.Detach();
}
Cleanup:
return hr;
}